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9604 Bellevanzuylen (1991 YW)
Classification: Main-belt Asteroid          SPK-ID: 2009604
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1338145777730471 3.9985e-08  
a 2.412779028801454 8.237e-09 au
q 2.089914021802725 9.6804e-08 au
i 5.368655243397452 3.4136e-06 deg
node 130.6282715112829 4.451e-05 deg
peri 274.1972776086701 4.6399e-05 deg
M 253.9705523493004 1.32e-05 deg
tp 2459403.679785314318
(2021-Jul-08.17978531)
5.0712e-05 TDB
period 1368.909542859404
3.75
7.01e-06
1.919e-08
d
yr
n .2629830450652168 1.3467e-09 deg/d
Q 2.735644035800183 9.3392e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1670  
   data-arc span      15911 days (43.56 yr)  
   first obs. used      1977-01-13  
   last obs. used      2020-08-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52439  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:09:38  

Additional Information
 Earth MOID = 1.10728 au 
 Jupiter MOID = 2.63888 au 
 T_jup = 3.500 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.4   n/a MPO435791  
rotation period rot_per 8.187 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

9604 Bellevanzuylen           Discovered 1991 Dec. 30 by E. W. Elst at Haute Provence.
Belle van Zuylen, pseudonym for Isabella Agneta Elisabeth van Tuyll van Serooskerken (1740-1805), descendant of ancient noblemen, was a Dutch writer from the Enlightenment. Primarily known from her extensive correspondence with the Scottish author James Boswell, she wrote also novels, plays and pamphlets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070730/MPCPages.arcLast Updated: 2007-08-07

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Alternate Designations
 1991 YW = 1977 AY = 1995 WW31 = 1997 LS16 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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